Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 49 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s science idea. 3. For a fair test: one thing changed, the rest kept the same, one thing measured. 4. For safety: an adult helps, nothing goes in the mouth, no heat, sharp tools or plug points for children.

1. 1.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) a flat tissue (b) a torn flat sheet (c) paper with folded edges (d) a wet flat sheet
3. 3.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the size of the bowl is kept the same. (a) False (b) True
4. 4.True or false: coins of one kind is not needed for the ruler lever. (a) True (b) False
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) yeast (c) white paper strips (d) soap solution
6. 6.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
7. 7.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) coloured (c) brighter (d) bigger
8. 8.True or false: a balloon is not needed for the static comb. (a) False (b) True
9. 9.📘 Rubbing moves tiny charges. What do we call the charge that builds up? (a) magnetism (b) sunlight (c) gravity (d) static electricity
10. 10.📘 What do we call water with sugar dissolved in it? (a) a solution (b) a rainbow (c) a crystal (d) a magnet
11. 11.⚖️ Fair test — do seeds need water to sprout? Which of these is what we measure? (a) the same bowls (b) the same place (c) how many seeds sprout (d) wet or dry cotton
12. 12.🛟 What is a safe way to use a ruler as a lever? (a) flick coins at faces (b) stand on the ruler (c) press it gently (d) bend it till it snaps
13. 13.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) aim it at your friend (c) put string round a neck (d) blow it till it bursts
14. 14.🛟 There is lightning outside. Where is it safest to be? (a) indoors (b) on a rooftop (c) in an open field (d) under a tall tree
15. 15.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) True (b) False
16. 16.🧺 Which of these is needed for the leafy bag test? (a) a mirror (b) turmeric powder (c) a few hours (d) vinegar
17. 17.🔬 In the scientific method, which step number is “draw a conclusion”?
18. 18.True or false: an ice cube is less dense than water. (a) False (b) True
19. 19.🧺 Which of these is needed for making butter? (a) a bowl (b) a battery cell (c) yeast (d) a mirror
20. 20.True or false: make seeds is a job of the roots. (a) False (b) True
21. 21.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
22. 22.🌱 Which of these is needed for a seed to sprout? (a) salt (b) soil (c) sugar (d) water
23. 23.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) more friction, less far (b) it goes faster (c) no change at all (d) less friction
24. 24.True or false: an eggshell gets its strength from arches or domes. (a) False (b) True
25. 25.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is the one thing we change? (a) the amount of sugar (b) the amount of yeast (c) the same bottles (d) the water temperature
26. 26.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) a friend’s toy (d) the Sun
27. 27.🛟 Does a steel spoon float or sink in water? (a) sinks (b) floats
28. 28.True or false: cooking oil does not dissolve in water. (a) True (b) False
29. 29.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) stare at the Sun (c) never look at the Sun (d) look at it through glass
30. 30.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) time to dissolve (b) the amount of water (c) the kind of sugar (d) the stirring
31. 31.🚀 Which of these goes forward? (a) the rowing boat (b) air from the balloon (c) gas from the rocket (d) water from the oars
32. 32.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) a small cup (c) water (d) a battery cell
33. 33.⚖️ Fair test — which kind of ball bounces highest? What do we do with “the kind of ball”? (a) we measure it (b) we keep it the same (c) we change it
34. 34.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a mirror (c) a balloon (d) two chairs
35. 35.🔮 Predict: you wet the comb before trying again. What happens? (a) it hardly works (b) it becomes a magnet (c) it works better (d) it lights up
36. 36.🔍 What do you see after pouring honey, water and oil into one glass? (a) three separate layers (b) one mixed colour (c) the glass gets hot (d) bubbles of gas
37. 37.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
38. 38.True or false: a book is translucent. (a) True (b) False
39. 39.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the paper clip is the one thing we change. (a) False (b) True
40. 40.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed

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